11000 Pa,2000 m³h,50 Hz/60 Hz High-Pressure,High-Volume Centrifugal Blower

This article's table of contents introduction:

1. Summary of Your Requirements
2. Type of Blower Needed
3. The Critical 50/60 Hz Issue
4. Component Specifications (for selection)
5. Recommended Search Terms (for suppliers)
6. Suppliers to Contact
7. Immediate Action Plan

Based on your specifications (11000 Pa, 2000 m³/h, 50/60 Hz), you are looking for a High-Pressure, Medium-Volume Centrifugal Blower.

Here is a breakdown of what this specification means, the type of blower required, and key considerations for selection.

Summary of Your Requirements

• Pressure: 11,000 Pa (approx. 1.12 m water gauge or 44.1 inches water gauge). This is High Pressure.
• Flow: 2,000 m³/h (approx. 1,177 CFM). This is a Medium Volume.
• Power/Frequency: Must work on both 50 Hz and 60 Hz electrical supplies.

Type of Blower Needed

For 11,000 Pa, you cannot use a standard forward-curved or backward-curved centrifugal fan. You need a High-Pressure Blower. The most common designs for this range are:

1. Backward-Curved (BC) / Airfoil: Efficient, stable, and can handle this pressure well. Look for fans with a heavy-duty impeller.
2. Radial Blade (or Radial Tip): Extremely robust, handles high pressure and dirty air well, but is less efficient than BC. Often used in pneumatic conveying.
3. Inline Centrifugal (or Mixed Flow) with High-Pressure Specifics: Less common at this exact crossover.

The Critical 50/60 Hz Issue

This is the most important part of your selection. A motor designed for dual frequency is required.

• The Problem: A motor running at 60 Hz spins 20% faster than at 50 Hz.

  • At 60 Hz: The fan will likely overspin, consuming significantly more power and possibly exceeding its safe operating pressure and motor current limits.
  • At 50 Hz: The fan will operate at 83% speed, delivering lower pressure and flow.

• The Solution 1: Dual-Frequency Motor with VFD

  • Purchase a blower with a Variable Frequency Drive (VFD) .
  • The motor is designed for the higher frequency (e.g., 400V / 60 Hz).
  • At 60 Hz: Run the VFD at 60 Hz. (Performance = 11,000 Pa, 2000 m³/h).
  • At 50 Hz: Run the VFD at 50 Hz. The motor will run slower. The fan will produce:
    • Flow: ~1667 m³/h (2000 * 50/60)
    • Pressure: ~7639 Pa (11000 * (50/60)²)
  • Crucial: To get 2000 m³/h AND 11,000 Pa at 50 Hz, you need a larger fan designed for those specs at 50 Hz.

• The Solution 2: Dedicated Windings (Less Common)

  A specialized motor with two separate winding sets (one for 50 Hz, one for 60 Hz). This is expensive and bulky.

• The Solution 3: Oversized Motor & Impeller for 50 Hz

  • You buy a blower that at 50 Hz already delivers 11,000 Pa and 2000 m³/h.
  • At 60 Hz (if needed): You must run it on a VFD to reduce the frequency back down to 50 Hz (or use a mechanical sheave change if belt-driven) to avoid overloading it.

Component Specifications (for selection)

Recommended Search Terms (for suppliers)

When searching for this blower, use these keywords:

• "High pressure centrifugal blower 11000 Pa 2000 m3/h"
• "Backward curved fan 11kW 2000m3/h 10000Pa"
• "Multistage centrifugal blower 2000 m3/h 1bar" (Note: 11,000 Pa = 0.11 bar, so this is close to a single-stage high pressure or a small multistage unit)
• "Ring blower side channel 2000 m3/h" (A side channel blower might struggle to hit 11,000 Pa at 2000 m3/h; they are better for lower flow/higher pressure. You need a centrifugal design.)
• "Regenerative blower 2000 m3/h 1100mmH2O" (mmH2O is the common unit for this pressure: 11,000 Pa = 1122 mmH2O)

Suppliers to Contact

• European: NICOTRA|Gebhardt, Ziehl-Abegg, Rosenberg, Soler & Palau, Ventilatorenfabrik Oelde (V.O.)
• Asian: TECO, Hitachi, Howden, Chongqing General Industry (CGI), various Chinese OEMs (look for "high efficiency backward curved fan").
• US: New York Blower, Cincinnati Fan, Chicago Blower, Dual Vortex (for higher pressure).

Immediate Action Plan

1. Confirm the application: Is this for pneumatic conveying, combustion air, industrial cooling, or aeration? (The design changes slightly).
2. Confirm the environment: Clean air or dust/grease?
3. Order a unit with a VFD designed for the higher supply frequency (e.g., 400V / 60 Hz base).
   • Run it at 60 Hz for your target duty.
   • If you connect it to a 50 Hz supply, the VFD will automatically limit the frequency and voltage, protecting the motor and fan.
4. Do NOT buy a simple fixed-speed motor and expect to just plug it into 50 Hz and 60 Hz sockets. It will fail or underperform.

Final Verdict: You need an 11 kW, 2-pole, High-Pressure Backward-Curved Centrifugal Blower with a VFD, designed for dual voltage/frequency operation. The cost will be significant, starting around $2,000 - $4,000 USD for a quality unit.